Sanyo-so stands by the quiet mountainside of Izu Nagaoka, which has prospered as a hot spring resort since the Kamakura Era. On the vast and nature-rich plot of land, visitors can enjoy the natural beauty of the four seasons in the garden full of elegant waterfalls and streams.

Sanyo-so was a simple but elegant Sukiya style Japanese residence in a grand Japanese garden built in 1929 as the second home of Hisaya, the eldest son of Yataro Iwasaki, the founder of the former Mitsubishi zaibatsu family-run conglomerate by the work of the garden designer, Jibe Ogawa in Kyoto.

Stay with us and enjoy the traditional Japanese rooms and garden, the relaxing hot spring, and traditional Japanese cuisine.

Dining in the guestrooms
Sanyo-so offers seasoned Japanese cooking using local ingredients like vegetables from Shuzenji and Amagi and seafoods from Suruga Bay and Sagami Bay. All ingredients have been strictly selected to bring out the best of each season.